TOP SECRET. This message is for your ears only. The recording you're about to hear reveals that the beloved nanny known as Mary Poppins was actually a secret agent and an assassin. Your mission is to learn how Mary and her partner in crime Bert expertly collaborated to infiltrate the Banks family, blackmail the father, and hijack the British economy! This message will self destruct in 5... 4... 3... 2... Watch Mary Poppins on Disney+, and follow along with us!